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avoid data race on doSubscribeToOneFiler/ma.filer.UniqueFilerEpoch (#3566)

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https://github.com/seaweedfs/seaweedfs/issues/3565
This commit is contained in:
Konstantin Lebedev 2022-09-01 21:01:47 +05:00 committed by GitHub
parent 9c76896e2d
commit 803ca3c958
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1 changed files with 3 additions and 2 deletions
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5
weed/filer/meta_aggregator.go
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@ -9,6 +9,7 @@ import (
"io"
"strings"
"sync"
"sync/atomic"
"time"
"google.golang.org/grpc"
@ -194,13 +195,13 @@ func (ma *MetaAggregator) doSubscribeToOneFiler(f *Filer, self pb.ServerAddress,
err = pb.WithFilerClient(true, peer, ma.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
ma.filer.UniqueFilerEpoch++
atomic.AddInt32(&ma.filer.UniqueFilerEpoch, 1)
stream, err := client.SubscribeLocalMetadata(ctx, &filer_pb.SubscribeMetadataRequest{
ClientName: "filer:" + string(self),
PathPrefix: "/",
SinceNs: lastTsNs,
ClientId: ma.filer.UniqueFilerId,
ClientEpoch: ma.filer.UniqueFilerEpoch,
ClientEpoch: atomic.LoadInt32(&ma.filer.UniqueFilerEpoch),
})
if err != nil {
return fmt.Errorf("subscribe: %v", err)